TV-Series
Description
Bian is a female member of the Tontatta tribe, a race of dwarves known for their incredible physical strength, from the kingdom of Green Bit in the New World. She serves as the captain of the Pink Bee Squad, the airborne division of the Tontatta army, and is a soldier under the larger alliance of the Straw Hat Grand Fleet.

In terms of appearance, Bian dresses to mirror her zoan abilities, typically wearing a striped shirt and a hat with antennae that make her resemble an insect. As a Devil Fruit user who ate the Mushi Mushi no Mi, Model: Hornet, she is a Zoan-type ability user who can transform into a giant hornet. In her hybrid form, she sprouts four transparent wings on her back, her arms increase to four, and she grows antennae on her head along with a hornet's stinger at the base of her spine. This ability grants her the rare power of flight, allowing her to carry fellow dwarves through the air for reconnaissance and tactical maneuvers.

Her personality is defined by a strict adherence to punctuality and duty. As a squad leader, she is serious about schedules and mission timing, often stressing the need to depart exactly as planned when others are late. Despite her small stature, she carries a lance and is a capable combatant, having utilized her stinger and insect-controlling abilities in battle.

Within the story, Bian plays a significant supporting role during the Dressrosa arc. She is among the dwarves who are initially deceived into believing Usopp is a great hero, leading them to request his leadership in their rebellion against the Donquixote family. During the operation to rescue enslaved dwarves from the SMILE factory, she is assigned to guard Robin and works alongside her to repel the officer Trebol, temporarily driving him away from the central tower. When Doflamingo activates the Bird Cage, Bian participates in the rescue efforts, using her insect communication skills to send written messages to coordinate the liberation of captive allies inside the factory.

Her key relationships are primarily with her fellow Tontatta warriors. She works closely with Kabu, the captain of the Yellow Kabu Squad, as the two aerial leaders of the kingdom's army. She also shares a bond of loyalty with King Gancho and the other dwarves, fighting to free her brethren from forced labor. Following the defeat of Doflamingo, she and her squad become part of the Straw Hat Grand Fleet as the fifth ship of the fleet, cementing her alliance with the Straw Hat Pirates.

Developmentally, Bian transitions from a guerrilla fighter seeking liberation to an allied warrior under a major pirate crew. Her primary motivation throughout is the freedom and safety of her people, whether that involves sabotaging the production of artificial Devil Fruits or ensuring the survival of the Tontatta kingdom. Her notable abilities include superhuman dwarf strength, flight, the use of a lance, and the ability to communicate via insect writing, making her a specialized asset in stealth and aerial support.